Method of preserving wood and the like



June 14, 1927.

c. SCHANTZ METHOD OF PRESERVING WOOD AND-THE LIKE Filed Jan. 25. 1927 I/IIIIIIIIIIII- Illllllllllllllll .n. x Z M n r miwm ZZ f Patented June I 14, 1 927.

UNITED STATES CABL SCHLNTZ, OF FBEIB'IIM, GE RIANY.

METHOD OF PBESIQBYIFN'G WOOD AND THE LIKE.

- Application filed hu :5, 19', Serial: at. 103,517, m in" Germany January 1c, 1920.

The invention relates 'to a method of and arliI implement for preserving wood and the li e. 4

It is known by incorporating the preserving agent with the wood through radial or axial holes, which are produced by piercing, drilling or a in any other suitable manner.

. There is also known a method for preserving wood in which a piercing implement in the form of a hollow pin is employed through the bore of which the preservingagent penetrates into the wood when the pin is forced into the wood or withdrawn from it.

In all these methods of impregnating wood it is only possible to charge the preserving a ent into the cavities produced by the impl ements or tools in the wood after .the piercing tools have been withdrawn from the Wood. The period between thevmoment when the tools, leave the cavities produced by them and the time at which the preserving substance penetrates into the cavities in the wood, is a matter of indifference for the' preserving action.

'For thls reason all the. methods employed heretofore labor under the drawback that the preserving agents cannot be forced under pressure into the'wood or that large boilers are necessary In which the wood must be preserved in its entire length.

The present invention eliminates these drawbacks by spreading the wood in its longitudinal direction for a few centimetres slightly apart or splitting it b means of a suitable designed piercing too so that the preserving agent may be forced under pressure into the split wood while the piercing pin is still located in the wood. The-piercing pin is a solid, preferably wedge-shaped pin.. This solid pin is in any suitable man- .ner combined with a charging device which surrounds the said pin at its upper end. The lower end of the charging device surrounds the upper portion of the solid pin in such a manner that a small annular or otherwise shaped space is leftbetween the solid pin and the charging device through which the preserving agent is able to pene- -trate into'the wood. At thecharging deofa-the possibi vice is provided a non-return valve which permits the preserving a ent introduced into the wood to be left within the wood under a pressure ofan desired height. On account ity' of forcing the preserving to preserve wood and the like the surface of the wood.

agent into the Wood under pressure, the preserving agent distributes itself widely into the wood alread during the forcing process,so that the pierced openings may be pro-' vided at comparatively long distances apart.

The drawing affixed hereto shows an embodlment of the invention by way of ex ample. In itis:

Fig. l, a longitudinal section through the broad side of the piercing tool,

i Fig. 2.

Like parts are indicated by like reference letters in all the figures of the drawing.

Referring to the drawing, A is the solid pin which is driven into the wood or other material to be preserved until the charging device B provided with means 0 for forming a seal against the wood firmly rests upon The charging de woe is equipped with a non-return valve D, upon which is placed a force pump of any desired kind. The preserving agent is forced by this/pump through the non-return valve D into the charging device B and flows through the annular space E between the. solid pin A and the charging-device B along the pin into the wood slightly spread apart by the pin where it distributes itself due to the pressure of the pump.

Various modifications and changes may be made without departing from the spirit and the scope of the invention, and I desire,

therefore, that only such limitations shall be placed thereon as are imposed by the prior art. a a

I claim as my invention:

1. Method of preserving wood and the like, which consists in forcing the preserving agent under pressure along a piercing device into the wood, said piercing device remaining in the wood during the forcing in' of the preserving agent.

2. In a device for preserving wood, in combination, a solid pointed pin adapted to be forced into the wood and a charging device around the upper portion of said pin through which the preserving agent is adapted to be forced along said pin into the spread apart wood. a

3. In a devi e for preserving wood, in combination, a solid pointed pin adapted to Fig. 2, a longitudinal section through the v be forced into the wood, and a charging device surrounding the upper projecting porbe forced into the wood, a charging device surrofinding the upper projecting portion of r said pin and, leavin an annular space between itself and sai pin through which the preserving agent is adapted to be forced along said pin into the'spread apart wood, a non-return valve upon said charging device, and a force pump connected with said valve.

In testimony vyhereof I :have afiixed my signature.

CARL SCHANTZ. 

